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24 november 2025

Maria Krasnova: Colored gemstones are a serious investment

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17 november 2025

Forging a new legacy: Tshenolo Ntshekang on building a black-owned diamond beneficiation business in South Africa

In an industry historically defined by limited access and foreign dominance, Tshenolo Ntshekang is carving a new path. The founder of Banzi and Karolo Projects, a black-owned diamond beneficiation business, Ntshekang, represents a growing wave of...

03 november 2025

Mahiar Borhanjoo returns to ‘The Heart Of The Diamond Business’

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27 october 2025

Mubri president Ali Pastorini: You just need to play a transparent game and do everything possible to attract clients

Ali Pastorini, co-owner of the DEL LIMA JEWERLY and president of the Mubri International Association, which unites more than 2,500 wholesalers, retailers, and designers from 18 countries. In this interview with Rough&Polished Ali Pastorini talks about...

20 october 2025

Gemfields March emerald auction realises average price of $4.45/ct

26 march 2024

Gemfields sold 3.85 million carats of rough emeralds from its 75%-owned Kagem mine in Zambia for $17.1 million during the March auction.

The emeralds were sold at an average price of $4.45 per carat.

It sold 2.97 million carats of emeralds in March 2023 at an average price of $7.13 per carat, generating $21.2 million in revenue.

Gemfields had offered 4.17 million carats, or 43 lots, for sale, but only 40, or 93%, were sold.

The 47 auctions of Kagem gemstones held since July 2009 have generated just above $1 billion in revenues.

“We are pleased to conclude another successful Kagem auction, demonstrating that the commercial-quality emerald market remains in good shape and prices achieved are broadly in line with the September 2023 commercial-quality auction,” said Gemfields’ managing director of product and sales, Adrian Banks.

He said the parcels accounted for 55% of the auction by weight, resulting in the lower overall dollar-per-carat figure realised at this auction.

“The three unsold lots were also not typical auction grades, being one large cluster of low-quality crystals and two lots of ‘Fines’ comprised of small-size material, said Banks.

“We now look forward to our next higher-quality emerald and mixed-quality ruby auctions to be held in Bangkok over May and June 2024.”

Mathew Nyaungwa, Editor in Chief of the African Bureau, Rough&Polished